Class 2 Data Line

Class 2 data is transmitted at a higher speed and messages are configured differently than UART data. While UART uses a master to control serial data line traffic, Class 2 uses the peer-to-peer method along with message arbitration to manage data line traffic. The control modules on the Class 2 data line are:
^ Powertrain Control Module (PCM)
^ Remote Function Actuator (RFA) Module